Detecting cell-condition changes

(19)

(11)

EP 1 085 316 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	11.12.2002 Bulletin 2002/50

(43)	Date of publication A2:
	21.03.2001 Bulletin 2001/12

(21)	Application number: 00307950.6

(22)	Date of filing: 13.09.2000

(51)	International Patent Classification (IPC)⁷: G01N 27/22, G01N 33/487, G01N 27/02

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

15.09.1999 GB 9921682

(71)	Applicant: ABER INSTRUMENTS LIMITED
	Cefnllan, Aberystwyth SY23 3AH (GB)

(72)	Inventor:
	Todd, Robert William Dr. Powys, SY20 8QC, (GB)

(74)	Representative: Gibson, Stewart Harry
	URQUHART-DYKES & LORD, Three Trinity Court, 21-27 Newport Road Cardiff CF24 0AA Cardiff CF24 0AA (GB)

(54)	Detecting cell-condition changes

(57) Changes in the parameters or conditions of cells in a suspension are determined by making impedance measurements of the suspension at a number of different frequencies, these measurements being used to determine any change in the frequency-dependent impedance characteristic, indicative of changes other than cell concentration or conductivity of the medium in which the cells are suspended.

Search report